2 layers33.7 × 97.8 mm
HAN ESP TSS721
UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported
29 parts470
4 layers129.2 × 52.8 mm
GottaGoFaSDZ3
LIV2/GottaGoFaZt3r37Zorro III Fast RAM for Amiga 3000/4000
- Size
- 129.2 × 52.8 mm
- Copper layers
- 4
- Thickness
- 4.69 mm
- Parts
- 71
- Nets
- 188
- Pads
- 666
- Tracks, vias
- 2,176, 270
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 22 Apr 2022
- Updated
- 2 Feb 2025
Overview
GottaGoFaSDZ3 is an open-source printed circuit board by LIV2, from the LIV2/GottaGoFaZt3r repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 4-layer board of 129.2 × 52.8 mm with 71 parts on 188 nets, routed with 2,176 tracks and 270 vias.
It is built around the LM1117-3.3. Its parts include 44 capacitors, 10 ICs, 2 resistors, 2 connectors and 1 crystal. It belongs with the retro computing and games boards and the FPGA and CPLD boards of this library.
Main components
1README
README.mdGottaGoFaZt3r Fast RAM
256MB Autoconfig Fast RAM for the Amiga 3000/4000
Table of contents
- Status
- Features
- Ordering PCBs
- Bill of materials
- Troubleshooting
- Special Thanks and Shoutouts
- License
Status
Tested and working in the following configurations:
- Amiga 3000
- Amiga 4000 with A3640
Features
128MB or 256MB Z3 Fast RAM
Brand new 32Mx16 SDRAM chips are quite expensive so the board can also be fitted with 16Mx16 chips for a much lower build cost
Ordering PCBs
I recommend ordering from JLCPCB as this board was designed within their 4-layer specifications
Recommended options when ordering:
- Thickness: 1.6mm
- Surface Finish: ENIG-RoHS
- Gold Fingers: Yes
- 45°finger chamfered: Yes
Layer sequence:
| Layer | File |
|---|---|
| L1 | GottaGoFaSDZ3-F_Cu.gbr |
| L2 | GottaGoFaSDZ3-In1_Cu.gbr |
| L3 | GottaGoFaSDZ3-In2_Cu.gbr |
| L4 | GottaGoFaSDZ3-B_Cu.gbr |
Bill of materials
| Component | Location | QTY | Link | Notes |
|---|---|---|---|---|
| 0.1uF Ceramic Capacitor, 0603 | C4-15,C17-44 | 40 | Mouser DigiKey | |
| 10uF Ceramic Capacitor, 1206 | C2-3,C16 | 3 | Mouser DigiKey | |
| 33 Ohm Resistor, 0603 | R1 | 1 | Mouser DigiKey | |
| 33 Ohm Resistor network, Convex 1206 (3.2x1.6mm) | RN1-8 | 8 | Mouser DigiKey | |
| 10K Resistor, 0603 | R2 | 1 | Mouser DigiKey | |
| LM1117-3.3 SOT-223 | U1 | 1 | Mouser Digikey | |
| 74LVC245N TSSOP | U2-5 | 4 | Mouser DigiKey | Can be substituted with SN74LVTH245 or SN74LVCR2245 |
| AS4C32M16SC 32Mx16 SDRAM, TSSOP-54 | U7-10 | 4 | Mouser DigiKey | Cheaper option is to use A3V56S40GTP 16Mx16 for a 128MB configuration at a drastically lower price, or scavenge some 32Mx16 SDRAM from old SODIMMs* |
| Xilinx XC95144XL-10TQG100C 10ns 144 Macrocell CPLD | U6 | 1 | Mouser Digkey | |
| Clock Oscillator, HCMOS, 7x5mm, 3.3V, ~66MHz | X1 | 1 | Mouser DigiKey | Anything close to 66MHz should work Tested at 66.6666MHz |
* I cannot provide technical support for RAM chips other than those explicitly listed in the BOM, others may work but you're on your own
Troubleshooting
Problem: The board is detected but there is less memory detected than there should be. or you see a message stating that the board is "Defective"
Resolution:
- Check all soldering looking for bad connections and shorts around the RAM and CPLD
- Test the RAM using ATK
Look for the relevant region under "List and test regions" and test it
Consult the memory layout to determine which IC is responsible for any stuck bits you might see
Memory Layout
The memory is laid out in a way that causes it to wrap around above 128MB when only 128MB of ram is fitted to the card allowing either 128/256MB configuration with the same CPLD firmware.
Kickstart will notice this wrap and add only 128MB to the free pool in this instance.
| Address | D0-15 | D16-31 |
|---|---|---|
| 40000000-43FFFFFF | U9 | U7 |
| 44000000-47FFFFFF | U10 | U8 |
| 48000000-4BFFFFFF | U9 | U7 |
| 4C000000-4FFFFFFF | U10 | U8 |
Special Thanks and Shoutouts
- Niklas Ekström for helping to clean up my messy code
- GadgetUK164 for
being a guinea pigbeta testing many of my boards - SparxUK also for being a helpful beta tester of many of my boards
- CDH and Stefan Reinauer for helping me to get my A3000 going
- Rob "peepo" Taylor whose A500++ got me started on my journey of tinkering with Amigas
- jbilander who came up with the cool name :)
- RetroFletch
- SukkoPera
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Parts
71| Qty | Value | Footprint | References |
|---|---|---|---|
| 40 | 0.1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10, C11, C12, C13, C14, C15, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26 +24 |
| 8 | 33 | Resistor_SMD:R_Array_Convex_4x0603 | RN1, RN2, RN3, RN4, RN5, RN6, RN7, RN8 |
| 4 | 74LVCR2245 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U2, U3, U4, U5 |
| 3 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C3, C16 |
| 3 | AS4C32M16SC | Package_SO:TSOP-II-54_22.2x10.16mm_P0.8mm | U7, U9, U10 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 33 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 47uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 66MHz | Oscillator:Oscillator_SMD_Abracon_ASV-4Pin_7.0x5.1mm_HandSoldering | X1 |
| 1 | Conn_01x06_Male | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | G*** | kibuzzard-621BB44F | kibuzzard-621BB44F |
| 1 | G*** | kibuzzard-622DC493 | kibuzzard-622DC493 |
| 1 | G*** | kibuzzard-622DC477 | kibuzzard-622DC477 |
| 1 | G*** | kibuzzard-621BB463 | kibuzzard-621BB463 |
| 1 | LM1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | XC95144XL-TQ100 | Package_QFP:TQFP-100_14x14mm_P0.5mm | U6 |
| 1 | Zorro3 | Zorro3:Zorro3 | CN1 |
| 1 | locked | Package_SO:TSOP-II-54_22.2x10.16mm_P0.8mm | U8 |
Similar boards
- 2 layers52.5 × 36.6 mm
ESP8266-WebRadio
karawin/Ka-Radio
A wifi webradio with only low cost boards ESP8266 and VS1053 by Jp Cocatrix
52 parts453 - 2 layers95.2 × 57.2 mm
- 2 layers189.5 × 204.9 mm
SmartSpin2k Panelized
doudar/SmartSpin2k
Transform your spin bike into a Smart Trainer!
749 parts292GPL-2.0 - 4 layers121.9 × 109.2 mm
Plinkyblack hwmidi jacks
plinkysynth/plinky_public
a public release of the plinky sw and hw
300 parts227 - 4 layers113.5 × 105.5 mm
Multistepper
eddyem/stm32samples
Code samples and ready projects based on bare-metal STM32
243 parts208 - 2 layers275 × 103 mm
- 2 layers43 × 34.3 mm
Questions
How big is the GottaGoFaSDZ3 PCB?
It measures 129.2 × 52.8 mm and has 4 copper layers, 4.69 mm thick.
What parts does the GottaGoFaSDZ3 use?
71 parts, built around the LM1117-3.3. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the GottaGoFaSDZ3 KiCad files?
From the LIV2/GottaGoFaZt3r repository on GitHub, at the commit this page was made from: the board is Kicad/GottaGoFaSDZ3.kicad_pcb and its schematic Kicad/GottaGoFaSDZ3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the GottaGoFaSDZ3 design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).